GestureLongPressDownCallback typedef Null safety

GestureLongPressDownCallback = void Function(LongPressDownDetails details)

Callback signature for LongPressGestureRecognizer.onLongPressDown.

Called when a pointer that might cause a long-press has contacted the screen. The position at which the pointer contacted the screen is available in the details.

See also:

Implementation

typedef GestureLongPressDownCallback = void Function(LongPressDownDetails details);